{"id":"CVE-2024-26896","state":"PUBLISHED","title":"wifi: wfx: fix memory leak when starting AP","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wfx: fix memory leak when starting AP\n\nKmemleak reported this error:\n\n    unreferenced object 0xd73d1180 (size 184):\n      comm \"wpa_supplicant\", pid 1559, jiffies 13006305 (age 964.245s)\n      hex dump (first 32 bytes):\n        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n        00 00 00 00 00 00 00 00 1e 00 01 00 00 00 00 00  ................\n      backtrace:\n        [<5ca11420>] kmem_cache_alloc+0x20c/0x5ac\n        [<127bdd74>] __alloc_skb+0x144/0x170\n        [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180\n        [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\n        [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\n        [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx]\n        [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211]\n        [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\n        [<47bd8b68>] genl_rcv_msg+0x198/0x378\n        [<453ef796>] netlink_rcv_skb+0xd0/0x130\n        [<6b7c977a>] genl_rcv+0x34/0x44\n        [<66b2d04d>] netlink_unicast+0x1b4/0x258\n        [<f965b9b6>] netlink_sendmsg+0x1e8/0x428\n        [<aadb8231>] ____sys_sendmsg+0x1e0/0x274\n        [<d2b5212d>] ___sys_sendmsg+0x80/0xb4\n        [<69954f45>] __sys_sendmsg+0x64/0xa8\n    unreferenced object 0xce087000 (size 1024):\n      comm \"wpa_supplicant\", pid 1559, jiffies 13006305 (age 964.246s)\n      hex dump (first 32 bytes):\n        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n        10 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00  ...@............\n      backtrace:\n        [<9a993714>] __kmalloc_track_caller+0x230/0x600\n        [<f83ea192>] kmalloc_reserve.constprop.0+0x30/0x74\n        [<a2c61343>] __alloc_skb+0xa0/0x170\n        [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180\n        [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\n        [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\n        [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx]\n        [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211]\n        [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\n        [<47bd8b68>] genl_rcv_msg+0x198/0x378\n        [<453ef796>] netlink_rcv_skb+0xd0/0x130\n        [<6b7c977a>] genl_rcv+0x34/0x44\n        [<66b2d04d>] netlink_unicast+0x1b4/0x258\n        [<f965b9b6>] netlink_sendmsg+0x1e8/0x428\n        [<aadb8231>] ____sys_sendmsg+0x1e0/0x274\n        [<d2b5212d>] ___sys_sendmsg+0x80/0xb4\n\nHowever, since the kernel is build optimized, it seems the stack is not\naccurate. It appears the issue is related to wfx_set_mfp_ap(). The issue\nis obvious in this function: memory allocated by ieee80211_beacon_get()\nis never released. Fixing this leak makes kmemleak happy.","publishedAt":"2024-04-17T10:27:47.214Z","updatedAt":"2026-05-11T20:06:31.074Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"a1f57a0127b89a6b6620514564aa7eaec16d9af3","versionType":"git"},{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"3a71ec74e5e3478d202a1874f085ca3ef40be49b","versionType":"git"},{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"12f00a367b2b62756e0396f14b54c2c15524e1c3","versionType":"git"},{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"dadbb5d29d6c5f571a50272fce8c1505a9559487","versionType":"git"},{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"b8cfb7c819dd39965136a66fe3a7fde688d976fc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/silabs/wfx/sta.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"6.1.83","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/silabs/wfx/sta.c"]}],"references":["https://git.kernel.org/stable/c/a1f57a0127b89a6b6620514564aa7eaec16d9af3","https://git.kernel.org/stable/c/3a71ec74e5e3478d202a1874f085ca3ef40be49b","https://git.kernel.org/stable/c/12f00a367b2b62756e0396f14b54c2c15524e1c3","https://git.kernel.org/stable/c/dadbb5d29d6c5f571a50272fce8c1505a9559487","https://git.kernel.org/stable/c/b8cfb7c819dd39965136a66fe3a7fde688d976fc"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26896.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26896","state":"PUBLISHED","datePublished":"2024-04-17T10:27:47.214Z","dateUpdated":"2026-05-11T20:06:31.074Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.186Z"},"containers":{"cna":{"title":"wifi: wfx: fix memory leak when starting AP","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wfx: fix memory leak when starting AP\n\nKmemleak reported this error:\n\n    unreferenced object 0xd73d1180 (size 184):\n      comm \"wpa_supplicant\", pid 1559, jiffies 13006305 (age 964.245s)\n      hex dump (first 32 bytes):\n        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n        00 00 00 00 00 00 00 00 1e 00 01 00 00 00 00 00  ................\n      backtrace:\n        [<5ca11420>] kmem_cache_alloc+0x20c/0x5ac\n        [<127bdd74>] __alloc_skb+0x144/0x170\n        [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180\n        [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\n        [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\n        [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx]\n        [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211]\n        [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\n        [<47bd8b68>] genl_rcv_msg+0x198/0x378\n        [<453ef796>] netlink_rcv_skb+0xd0/0x130\n        [<6b7c977a>] genl_rcv+0x34/0x44\n        [<66b2d04d>] netlink_unicast+0x1b4/0x258\n        [<f965b9b6>] netlink_sendmsg+0x1e8/0x428\n        [<aadb8231>] ____sys_sendmsg+0x1e0/0x274\n        [<d2b5212d>] ___sys_sendmsg+0x80/0xb4\n        [<69954f45>] __sys_sendmsg+0x64/0xa8\n    unreferenced object 0xce087000 (size 1024):\n      comm \"wpa_supplicant\", pid 1559, jiffies 13006305 (age 964.246s)\n      hex dump (first 32 bytes):\n        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n        10 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00  ...@............\n      backtrace:\n        [<9a993714>] __kmalloc_track_caller+0x230/0x600\n        [<f83ea192>] kmalloc_reserve.constprop.0+0x30/0x74\n        [<a2c61343>] __alloc_skb+0xa0/0x170\n        [<fb8a5e38>] __netdev_alloc_skb+0x50/0x180\n        [<0f9fa1d5>] __ieee80211_beacon_get+0x290/0x4d4 [mac80211]\n        [<7accd02d>] ieee80211_beacon_get_tim+0x54/0x18c [mac80211]\n        [<41e25cc3>] wfx_start_ap+0xc8/0x234 [wfx]\n        [<93a70356>] ieee80211_start_ap+0x404/0x6b4 [mac80211]\n        [<a4a661cd>] nl80211_start_ap+0x76c/0x9e0 [cfg80211]\n        [<47bd8b68>] genl_rcv_msg+0x198/0x378\n        [<453ef796>] netlink_rcv_skb+0xd0/0x130\n        [<6b7c977a>] genl_rcv+0x34/0x44\n        [<66b2d04d>] netlink_unicast+0x1b4/0x258\n        [<f965b9b6>] netlink_sendmsg+0x1e8/0x428\n        [<aadb8231>] ____sys_sendmsg+0x1e0/0x274\n        [<d2b5212d>] ___sys_sendmsg+0x80/0xb4\n\nHowever, since the kernel is build optimized, it seems the stack is not\naccurate. It appears the issue is related to wfx_set_mfp_ap(). The issue\nis obvious in this function: memory allocated by ieee80211_beacon_get()\nis never released. Fixing this leak makes kmemleak happy."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"a1f57a0127b89a6b6620514564aa7eaec16d9af3","versionType":"git"},{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"3a71ec74e5e3478d202a1874f085ca3ef40be49b","versionType":"git"},{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"12f00a367b2b62756e0396f14b54c2c15524e1c3","versionType":"git"},{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"dadbb5d29d6c5f571a50272fce8c1505a9559487","versionType":"git"},{"version":"268bceec1684932e194ae87877dcc73f534d921c","status":"affected","lessThan":"b8cfb7c819dd39965136a66fe3a7fde688d976fc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/silabs/wfx/sta.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"6.1.83","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/silabs/wfx/sta.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a1f57a0127b89a6b6620514564aa7eaec16d9af3"},{"url":"https://git.kernel.org/stable/c/3a71ec74e5e3478d202a1874f085ca3ef40be49b"},{"url":"https://git.kernel.org/stable/c/12f00a367b2b62756e0396f14b54c2c15524e1c3"},{"url":"https://git.kernel.org/stable/c/dadbb5d29d6c5f571a50272fce8c1505a9559487"},{"url":"https://git.kernel.org/stable/c/b8cfb7c819dd39965136a66fe3a7fde688d976fc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:06:31.074Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.8.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"5.10","status":"affected"}],"cpes":["cpe:2.3:o:linux:linux_kernel:5.10:-:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"268bceec1684","status":"affected","lessThan":"a1f57a0127b8","versionType":"custom"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]}],"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-26896","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2024-05-13T16:49:12.892582Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","type":"CWE","description":"CWE-125 Out-of-bounds Read"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-06-04T17:48:38.723Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/a1f57a0127b89a6b6620514564aa7eaec16d9af3","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/3a71ec74e5e3478d202a1874f085ca3ef40be49b","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/12f00a367b2b62756e0396f14b54c2c15524e1c3","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/dadbb5d29d6c5f571a50272fce8c1505a9559487","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/b8cfb7c819dd39965136a66fe3a7fde688d976fc","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T00:21:05.675Z"}}]}}}